Collatz predecessor 0.90 Lean proof bundle
Prepared date: 2026-07-18

Lean toolchain:
  leanprover/lean4:v4.30.0-rc2

Pinned dependencies:
  mathlib 5450b53e5ddc75d46418fabb605edbf36bd0beb6
  inherited dependency revisions are recorded in lake-manifest.json

Source proof provenance:
  completed proof commit 0bb368e3b51b980ef5c3b33bb86316e3001c37ac

Top-level checked proof module:
  CollatzPredecessor090

Exact theorem module:
  Erdos1135.KrasikovLagarias.K18PredecessorAllTargets

Certificate parameters:
  k = 18
  gamma = 901/1000
  publication exponent = 9/10

Trust classification:
  NATIVE_ASSISTED
  two explicit native_decide finite-certificate axioms

Comparator config:
  comparator.json

Exact repository identity:
  Use `git rev-parse HEAD` after the final release commit.